Cooker.



P. M. CONKEY.

v GOOKBR. APPLIUA'TION PILBp JULY 1, 19124 1,070,586- Patented Aug.19,1913.

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PETE. M. CONKEY, OF LONGBEACH, CALFORNIA COOKER.

specification of Letters Patent. Patented Aug. tt', MMS.

f Application tlled July 1, 1912. Serial No. 708,984.

To am 'za/wm t may concern Be it known thatl. PETER M. CQNKEY, a citizen ot" the United States, residing at Longbeach. in the county of Los Angeles and State ot`California, have invented a new and useful Improvement in Cookers, ot' which the following is a specification.

The invention relates to cookers and especially to that class where the process is aided by the use of steam pressure.

lts principal object is to provide a cooker in which articlesI can be cooked in high altitudes and increase the temperature required to boil water contained and used as a cooking medium.

, .lt is also an object to provide a cooker in which all thel f'apor or steam is confined and the heat absorbed by the contained articles.

.lt is a t'urther object to provide means to regulate the pressure within the cooker and' provide safety means in connection therewith. t

ln the drawings accompanying this specitication and .forming therewith ay portion ot thiy application 'toi' Letters latcnt', Figure l is a` central vertical section through the cooker, showing the closure and they auxiliary connections in elevation. Fiv. i?. is a plan view otthe device. viewed from above. Fig. 3 is a cross section on the line llooking in the direction of the arrows, and Fig. 4 is a cross section on the line 4--4 viewed in the direction ot' the arrows.

lleretot'ore, in the preparing of foods by boiling processes in high altitudes, ,the time required has been materially increased on aecount ot' the reduced atmospheric pressure and the. consequenty absorption ot` an excess ot heat` units to reach the proper temperature at which water will boil under these circnmstanoes.'

l overcome the objections mentioned by theuse ot' my invention and in the drawings 5 represents the cooker, preferably of cylindrical torm composed ot' side walls t3 ot' heat resisting and pressure sustaining Inaterial. ln the bottom ot' the cooker is shown at T a disk set inside the cylindrical walls and secured by the rivets 8 as is customary in, steam boiler structure.

rlhe top S is shown` preferably formed of cast metal, threaded `on its engaging periphery and adapted to engage threads cut on the inner 'periphery of the cylindrical,

walls t' to securely hold the same in relation thereto and t'orm an a|r tight connection.

Concentrically placed in the top 9 is the entrance opening 10 beveled to form a seat for the valve lid 1l and adapted to register so as to forni a tight seal. 'llo properly secure this lid it is provided With an annular hub 12, which is threaded to receive the threaded stem 13, which passes therethrough and is supplied with the head H. which engages with the locking bar l5 pivotally mounted on the saine. The upper end of the valve stem'is provided with a hand wheel 1G suitably keyed to the stem by the key 1T.

In a threaded aperture, extendingr through the top t) is placed the screw threaded nipple of a safety 'alve 18 ot' usual and common form` provided with a lever and weighted ball lt) which can be setA to blow atA any de sired pressure. An aperture is provided in the side wall 6 in which is attached by suitable threaded connections the pressure gage 2t), adapted to register the-pressure within the cooker.

Luitably placed in proximity to thel bottom is shown the drain cock 2l. by means otE which contained water, to any required amount may he withdrawn without disturbing any ot the other connections.

As shown in Fig. l` the device is placed on any suitable support as 2L, on a heating member` shown as a gas burner 23. v

lithin the cooker is shown a plurality 0f small containers ot' such size as to be r ladily.

introduced or removed through the aperture L l() in the. top ot' the cooker.

ln the, operation of the device, water 'is introduced a t'ler the containers 24 are placed in position, to a height that will approach near the tops of the containers. The valve lid 1l isapproximated in position and the cross bar introduced to engage the lower lip ot the openings and the hand wheel turned until the lid is firmly seated in the opening, when the device is ready to receive. the apphcation of heat.

As will be readily understood` as soon as the heat is applied the pressure will rise in the confined arca of the cooker and will approximate more nearlythe usual atmospheric pressure in lower altitudes, the iyater will boil and generate steam at the usual temperature ot 2190 lt`. and the articles in the containers Q4 will receive the t'ull benefit ol' the heat units generated and will losel no aromatic properties which are usually lost in open cooking` and, b v retaining the pressure, 'the time required ordinarily in di.

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.,opening, -threaded on its periphery to engage the Cylindrical receptacle, said aperture having inrectly applying the heat will be materially reduced, approximately from two-thirds to one-fourth of the time, not only from the beneficial results from the pressure, but by confining the heat units. Disagreeable odors frequently emanating from uncovered cookig articles are also eliminated by the use of my improved cooker.

What I claim is: l

A cooker, comprising a cylindrical receptacle provided with a threaded external a centrally apertnred closure Wardly inclined edges forming a valve seat,

avralve plate adapted to fit in said valve i seat toforin a closure therefor provided with tacle.

a centrally threaded bore, al threaded shaftk engaging said threaded bore lprovided with a bar engaging lug, a bar of greater length than" the internal diameter of said valve seat mounted on said valve shaft, and afhandle keyed to said threaded valve shaft, whereby the bar engaging saidlower edge of the valve seat, the valve may be tightly seated to retain pressure created Within the recepln witness that I claim the foregoing I lhave hereunto subscribed my name this 22nd day et' June, 1912. y

` P. M. CONKEY. lVitnesses lCmiUNn A. STRAUSE, M. J. WEBB. 

